Touted statm parentoffice



l. cH|GE. DENT/(l vBRIDGE TRAY.

APPLICATION FILED JAN. 9. 1919.

1,323,832. Ptented Dec.2,r1919.'

INVENTOR Sei/aar 5.1711@ ATTORNEY IsInoR einen, or NEW YORK, N. Y.

DENTAL-BRIDGE TRAY.

To all whom it may concern.- 1

Be it known that'I, Ismon CHIGE, a citi- Zen of the United States, and aresident of New York, in the county of NewiYorkand State of New York, have invented a certain new and useful Improvement in Dental-Bridge Trays, of which thefollowirrg is a full, clear, and exact specification.

This invention relates to a class of de-V vices adapted to be used in the *practiceY of dentistry.

My invention has for its object primarily to provide a tray or device designed to be employed for taking an impression of one or'more teeth of a person whereby al mold may be provided to enable crowns or caps and the like forthe teeth to bev made, and which is of a form adapted to permit vthe trough or support of the mold properv to be dispensed with ifV use, in order to overcome the liability of af-v fections of the mouth from being trans? mitted from one person to another. The invention` resides mainly in providing a handle element or carrier ofk yielding Ymaterial providedk with coacting spring actuated clamping ljaws for removably receiving the pin of a trough or casing in which is held impression tak'ng material so that the trough with yitsmolding material may be dispensed with after being used'. The'pin is also revoluble in the clamping jaws of the Y handle element to allow the trough to be adjusted to lsuitable positions for obtaining ready access to all parts of a persons mouth, and the trough `or vcasing may be Y of any preferred or well known type.

A further object of the invention is to provide a dental bridge vtray of a simple, efiicient and durable construction which may be made in any desired shape and'size.

With these andv lother objects in view, the invention will be hereinafter more particularly described with reference to the accompanying drawing forming a part of this specification in which similar characters of reference indicate corresponding parts in all the views, and will then be pointed out in the claims at the end of the description.

In the drawing, Figure 1 is a perspective view of one form of dental bridge tray embodying myy invention.

Fig. Q is an enlarged top plan of the han'- dle element used in the device with a top Specification of Letters Batent.

Application led Jamiarye, 1919.5 sria1No.27o,292.

desired following its'Y i Patenteanee. a, 1919.

planv of the ktrough lines, and Y Fig.V 3 is a sectional view,- partly 'infdetaih taken on the line 3-3 ofv Fig. 2. Y Y

Thedevice orbridge tray has'a trough or casing 10 which may be made in any well known or preferred shapel as-well as being of any desired size, though I prefer to employ in A practice the form of the trough illustrated.- This troughor casing has a bottom'11 which may be fiat, and the ends kof the wall may be formed so: as to taper or`converge toward each other, as at 12 and 13. One of the lengthwise edges of the Vbottom 11 of the trough between its tapered ends may be curved inwardly, as at 14, while the second being shown in dotted slightly wardly from the concaved edge 14' of the bottom 11 of the trough is a wall' 16 which is also concaved to ,conform with'the concavity of the edge 14 ofthe bottom, and the freeedge of this wall may be'curved in substantially a semi-circular -shape,qas shown. Extending upwardlyffrom the convex edge 15 of the bottom 11 of the trough lis another wall 17 which is -slightly convexed, and the slightly f concaved or P lengthwise edge `of Vthe bottom' may -beV conveXed, as at 15. Projecting upf free yedge of this wall be curved also in substantially a semi-circular fashion. By forming the trough 10 in this manner it conforms with the curvature of of a person so that one orlmore teeth in any part of the mouth-may lbe readily4 reached and received between the wallsl and 17 of the troughfwhen disposed accordinglyy inthe mouth. Protruding downwardly from 4the underside of the bottom of the'trough is a lug or pin 18 which is preferably vhaving a short shank 19 with a head 20. The trough or casing 10 may be made of metal or other suitable material to allow of being dispensed with if desired following its use, in order to avoid the possibility-of disease ofthe mouth of one person from being transmitted to vanother person.

To allow the trough or`casing 10 to be conveniently and properly manipulated Va handle element or carrier 21 is' provided. This handle element may be of any suitable size and shape as well as being made of any desired material, though the handle element fis preferably made of spring metal or other yielding material and as illustrated the hanthe teethV of aform r shape. On one end of the body portion 22 of the handle element are two coasting clamping jaws, as 23 and 24; These jaws- Y are of correspondingformations andV may be providedV by enlarging one end of the body portion,las at 25. The part of the Y the handle element is notched, at 26. rIhe notch-26 is vofa shape having slightly inwardly tapered walls, as 27 and 28, at its mouth, and communicating with the mouth r' is a partially circular recess, Yas 29. Coinmunicating with the' recess 29 ofthe notch 26 Visa slot, as 30, disposed lengthwise of the body portion of the handle element 'as well as being of Ya length toY extend nearly kinidway toward the second end of the body por- Y tion,` andthe second .end of the slot may terminate with a communicating hole, as 31,

formedv through'the body portion. On the second end of the body portion p-of this handle element may be pro-vided ja ring, as 32, to allow the device to be conveniently handled by ya person and also to allow .the

handle to be hung on a nail or the like when not in use.A The tapered mouth of the notch 26,0f thehandle element is of a size slightly smaller than the pin to be sprung between the yclamping jaws 23 and 24 when the trough and the. handle element are V'connected, and the recess 29 of the notch. is somewhat larger than the shank of the pin, while the head of thek pin is larger than the notch of the recess. Y When the trough 10 is applied to the handleelement or carrierVV 21 the pin 18 of the trough is inserted in the notch 26 of the` handle elementv'bythe shank-of the pinbeing passed throughrthemouth of the notch and into the recess of the notch, The

trough will then be removably clamped to Vthe handle element as well as being rotatably adjustable to allow the trough to be f moreteeth, and the device is arranged inthe ulated in the usualmanner so that a mold of V easily disposed-in any part offav persons mouth. In practice the trough is lled with plaster Paris or other suitable cementitious material for taking an impression of one or mouth of the person as well vas'being manipthe teeth will be provided to allowcrowns,

caps and the like be separated,

,Y shank 19 of the pin 18'; of.

. the trough 10 to cause the body portion. Y f Y v to be made in accordance Y withthe mold. Following the fuse. of the mold the tro-ugh together with the mold may from the handle element by Y Awithdrawing the` pin 18 of the trough from meas@ trough with the mold may bedispensedwith if desired.

In the foregoing description, Ifhave enibodied the preferred form of my invention,

.but I do not wish to be'understood as limit- Y ing Vmyself thereto, as I am aware that modi- `fications may be made therein without defree edge of thisenlarged portion coincident vwith the center lengthwise of the bodyv of parting from the principle or sacrificingany of l,theadvantages. of this invention, therefore, I reserve to myself the right to make ters Patent 1. Ina dental claim as new Yand desire to secure by Letbridge'tray, ya Ahandle element comprising a'V flat elongated yielding body portion having a slot extending lengthwise of the body portion and having afnotch in one end ofthe body portion, communicating with one end of the slot whereby spring Vactuated clampingv jaws are `provided on thebodyportion. Y .2. In a dental. bridge tray, a handle element comprising a yiiatV elongated. yielding 1' body portion, spring actuated clamping jaws on oneend ofthe body'portion, formed by notching oner end of the body portion and providing the mouth ofthe notch with tapered walls as well as pro-vidingin they body a slot communicatingwith the notch, and a ring member on l,the'second end of the 3. `The combinati'om in ja dental bridge tray, of a trough and a handlerelement com- Y l' prising a flat elongated Yyielding body portion having a slot extending lengthwise of `the, body portion and havingV a notch in one end ofthe bodyrportion, v communicating with one end of the slot whereby spring ac tuated clamping A jaws are provided onYV the body portion. .Y Y

4. The combination, in al dental bridge tray, of a trough, .a handle element comprising a flat elongatedfyielding body portion, .l

spring actuated clamping Vjaws on'one end of the body portion, formed by notching one end of the body portion and providing the mouth of the well asproviding in the body a slot communicating with the notch, anda ringmemv ber on the seco-ndend of the body portion.

This Yspecification signedl and witnessed this 8th dayV of January A. D. 1919.1?

Y vISIDOR f WitnessesfV A f -r J. FREDERICK'CRYER,

K. KOEPER.

notch with taperedwalls asl iio 

